One Degree

One Degree is a California-based 501(c)(3) nonprofit technology organization that empowers low-income and underserved individuals, families, and social-service professionals to find and access life-changing benefits and services. Its Resource Server API exposes a curated, community- maintained database of social-service resources — organizations and the opportunities (programs and services) they offer, along with locations, phones, schedules, ratings, tags, comments, images, properties, guides, and housing properties. The API is designed for interoperability with third-party services so communities can coordinate and deliver social services more effectively. It is a read-focused REST API served at data.1degree.org/v1, authenticated with an api_key query parameter and HMAC-SHA256 request signatures for write verbs. Resource data is licensed under Creative Commons Attribution-NonCommercial 4.0 International.

One Degree publishes 6 API contracts indexed on the APIs.io network, including Housing API, Locations API, Opportunities API, and 3 more. Tagged areas include Company, Non-Profit, Social Services, Community Resources, and Human Services.

The One Degree catalog on APIs.io includes 1 Spectral governance ruleset.

One Degree’s developer surface includes documentation, API reference, engineering blog, support, signup flow, authentication, and 18 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

38.1/100 thin ▬ flat Agent 27/100 agent aware Front door AI 1/6 silent Heartbeat 50/100 alive saas Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

1 published contract 2 Agent Skills

Company Non-Profit Social ServicesCommunity ResourcesHuman Services Public-benefit Housing Open Data Civic Tech

Kin Score

Kin Score How this is scored →
scored 2026-11-06 · rubric v0.27.0

Composite quality — 38.1/100 · thin

Contract Quality 9.7 / 21

Developer Ergonomics 8.2 / 17

Access Clarity 4.7 / 17

Operational Transparency 0.3 / 11

Contract Governance 1.9 / 10

Discoverability 6.2 / 9

Regulatory Posture 3.7 / 15

Agent readiness — 27/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 6 / 6

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 9 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 7 / 7

Rate-Limit Signaling 0 / 7

Typed Event Surface 0 / 6

Agent Skills 5 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 4 / 4

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Pagination 5 / 5

Distinct Operations 3 / 3

MCP Tool Quality 6 / 6

Regulatory Posture applies to this provider. Its tags matched the Government & Public Sector regime, so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.

Create-or-Update Ergonomics does not apply to this provider. The published contracts declare no write operations, and a read-only API cannot create-or-update. The facet is excluded from this provider's denominator entirely — not scored zero. A reference or data API is not deficient for being unable to upsert.

The six quality facets above are damped to 85 points between them, because the conditional facet above carries the other 15. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 85% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

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Agent readiness — checks not met, largest first (exact, from this profile):

MCP Server +12 pts — deployment.mode + probe verdict on the mcp/ manifest, not the pointer; an unprobed slug falls back to authorship
Agentic Access Contract +10 pts — agentic_access artifact present (x-agentic-access), graded by author
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0
Rate-Limit Signaling +7 pts — OpenAPI responses document X-RateLimit-* / RateLimit headers (verified), else a rate_limits artifact or RateLimits link (documented)
Registration Without a Human +6 pts — a `registration_endpoint` in the served RFC 8414 / OIDC discovery document
Delegated User Identity +6 pts — a served discovery document listing authorization_code in grant_types_supported (served), else an oauth2 authorizationCode flow or openIdConnect declared in an OpenAPI (documented)

5 more unmet checks in the Agent Readiness table above.

Kin Score — facets with the most composite points still available (weight × headroom):

Access Clarity scores 27.6 — up to +14.5 composite points
Contract Quality scores 45.8 — up to +13.6 composite points
Operational Transparency scores 2.6 — up to +12.7 composite points

Each check links to what satisfies it. Publish the artifact, or tell us where it already lives, and the score moves on the next scoring run.

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from the provider profile at artifacts.apis.io/one-degree/apis.yml: open an issue on github.com/api-evangelist/one-degree to ask a question or point us at an artifact you publish. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

Standards implemented 1

Standards this provider implements or carries. De facto ones are profiled and measured by the API Commons; formal ones come from the standards directory and are linked by the provider's own tags. The evidence column says how each claim was established — not that it was made.

OpenAPI

measured — observed by APIs.io (published)

APIs 6

Individual APIs this provider publishes, each with its own machine-readable definition.

One Degree Housing API

Housing properties.

One Degree Locations API

Physical locations, phones, and schedules.

One Degree Opportunities API

Programs/services offered by organizations.

One Degree Organizations API

Social-service organizations.

One Degree Reference API

Property types, rating types, and guides.

One Degree Submissions API

Community submissions.

Postman Collections 1

Ready-to-run Postman collections for exercising this provider's APIs.

One Degree

POSTMAN

Open Collections 6

Open, tool-agnostic API collections (OpenAPI-derived and Bruno).

One Degree Resource Server Housing API

OPEN COLLECTION

One Degree Resource Server Housing Locations API

OPEN COLLECTION

One Degree Resource Server Housing Opportunities API

OPEN COLLECTION

One Degree Resource Server Housing Organizations API

OPEN COLLECTION

One Degree Resource Server Housing Reference API

OPEN COLLECTION

One Degree Resource Server Housing Submissions API

OPEN COLLECTION

Arazzo Workflows 1

Multi-step API workflows described with the Arazzo specification.

One Degree — find and detail a nearby service

Search opportunities by location, then load the top result's details and schedule.

ARAZZO

Agent Skills 2

Packaged agent skills for driving this provider's APIs from an AI assistant.

Explore a provider organization and its locations

AGENT SKILL

Find social services near a location

AGENT SKILL

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

One Degree API Rules

63 rules · 61 errors 1 warnings 1 info

SPECTRAL

OpenAPI Overlays 1

Overlays applied on top of this provider's contracts. Each card says who wrote it: a document the provider publishes, or one API Evangelist derived or generated.

One Degree Openapi Overlay

3 actions · update · one-degree-openapi.yml

DERIVED

Security Posture 2

Authentication, domain security, vulnerability disclosure, and trust-center signals.

One Degree Authentication

apiKey/custom-signature · 2 schemes

SECURITY

One Degree Domain Security

TLSv1.2 · HSTS · DMARC

SECURITY

Resources

Get Started 2

Portal, sign-up, and the first successful call

DeveloperPortal

DeveloperPortal

SignUp

SignUp

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 3

MCP servers, agent skills, and machine-readable catalogs

X-MCPServerCandidate

X-MCPServerCandidate

LLMsTxt

LLMsTxt

AgentSkill

AgentSkill

Design & Contract 6

Pagination, idempotency, versioning, errors, and events

Conventions

ErrorCatalog

Lifecycle

Conformance

DataModel

Arazzo

Build 2

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Postman

Postman

Access & Security 2

Authentication, authorization, and security posture

Authentication

Authentication

DomainSecurity

DomainSecurity

Operate 1

Status, limits, changes, and where to get help

Support

Support

Commercial 2

Pricing, plans, and the legal terms of use

TermsOfService

TermsOfService

PrivacyPolicy

PrivacyPolicy

Company 3

The organization behind the API

BlogRSS

BlogRSS

Website

Website

Blog

Blog

Other 1

Properties that don't map to a standard resource type

Overlay

Overlay

Source (apis.yml)

aid: one-degree
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: true
  label: Hosted service · you call their endpoint
  confidence: high
  source:
  - openapi
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source:
  - authentication
  - security
  generated: '2026-11-06'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/one-degree.png
name: One Degree
description: One Degree is a California-based 501(c)(3) nonprofit technology organization that empowers low-income and underserved
  individuals, families, and social-service professionals to find and access life-changing benefits and services. Its Resource
  Server API exposes a curated, community- maintained database of social-service resources — organizations and the opportunities
  (programs and services) they offer, along with locations, phones, schedules, ratings, tags, comments, images, properties,
  guides, and housing properties. The API is designed for interoperability with third-party services so communities can coordinate
  and deliver social services more effectively. It is a read-focused REST API served at data.1degree.org/v1, authenticated
  with an api_key query parameter and HMAC-SHA256 request signatures for write verbs. Resource data is licensed under Creative
  Commons Attribution-NonCommercial 4.0 International.
url: https://raw.githubusercontent.com/api-evangelist/one-degree/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- y-combinator
x-tier: stub
x-tier-reason: portfolio-lead
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-10-06'
tags:
- Company
- Non-Profit
- Social Services
- Community Resources
- Human Services
- Public-benefit
- Housing
- Open Data
- Civic Tech
tags_raw:
- Company
- Nonprofit
- Social Services
- Community Resources
- Human Services
- Public Benefit
- Housing
- Open Data
- Civic Tech
- API
apis:
- aid: one-degree:one-degree-housing-api
  name: One Degree Housing API
  description: Housing properties.
  humanURL: https://github.com/1deg/resource-server-api-docs
  baseURL: https://data.1degree.org/v1
  tags:
  - Housing
  properties:
  - type: OpenAPI
    url: openapi/one-degree-housing-api-openapi.yml
  - type: Documentation
    url: https://github.com/1deg/resource-server-api-docs
  - type: Postman
    url: postman/one-degree.postman_collection.json
  - type: Authentication
    url: authentication/one-degree-authentication.yml
  - type: Conventions
    url: conventions/one-degree-conventions.yml
  - type: ErrorCatalog
    url: errors/one-degree-problem-types.yml
  - type: Lifecycle
    url: lifecycle/one-degree-lifecycle.yml
  - type: Conformance
    url: conformance/one-degree-conformance.yml
  - type: DataModel
    url: data-model/one-degree-data-model.yml
- aid: one-degree:one-degree-locations-api
  name: One Degree Locations API
  description: Physical locations, phones, and schedules.
  humanURL: https://github.com/1deg/resource-server-api-docs
  baseURL: https://data.1degree.org/v1
  tags:
  - Location
  tags_raw:
  - Locations
  properties:
  - type: OpenAPI
    url: openapi/one-degree-locations-api-openapi.yml
  - type: Documentation
    url: https://github.com/1deg/resource-server-api-docs
  - type: Postman
    url: postman/one-degree.postman_collection.json
  - type: Authentication
    url: authentication/one-degree-authentication.yml
  - type: Conventions
    url: conventions/one-degree-conventions.yml
  - type: ErrorCatalog
    url: errors/one-degree-problem-types.yml
  - type: Lifecycle
    url: lifecycle/one-degree-lifecycle.yml
  - type: Conformance
    url: conformance/one-degree-conformance.yml
  - type: DataModel
    url: data-model/one-degree-data-model.yml
- aid: one-degree:one-degree-opportunities-api
  name: One Degree Opportunities API
  description: Programs/services offered by organizations.
  humanURL: https://github.com/1deg/resource-server-api-docs
  baseURL: https://data.1degree.org/v1
  tags:
  - Opportunities
  properties:
  - type: OpenAPI
    url: openapi/one-degree-opportunities-api-openapi.yml
  - type: Documentation
    url: https://github.com/1deg/resource-server-api-docs
  - type: Postman
    url: postman/one-degree.postman_collection.json
  - type: Authentication
    url: authentication/one-degree-authentication.yml
  - type: Conventions
    url: conventions/one-degree-conventions.yml
  - type: ErrorCatalog
    url: errors/one-degree-problem-types.yml
  - type: Lifecycle
    url: lifecycle/one-degree-lifecycle.yml
  - type: Conformance
    url: conformance/one-degree-conformance.yml
  - type: DataModel
    url: data-model/one-degree-data-model.yml
- aid: one-degree:one-degree-organizations-api
  name: One Degree Organizations API
  description: Social-service organizations.
  humanURL: https://github.com/1deg/resource-server-api-docs
  baseURL: https://data.1degree.org/v1
  tags:
  - Organization
  tags_raw:
  - Organizations
  properties:
  - type: OpenAPI
    url: openapi/one-degree-organizations-api-openapi.yml
  - type: Documentation
    url: https://github.com/1deg/resource-server-api-docs
  - type: Postman
    url: postman/one-degree.postman_collection.json
  - type: Authentication
    url: authentication/one-degree-authentication.yml
  - type: Conventions
    url: conventions/one-degree-conventions.yml
  - type: ErrorCatalog
    url: errors/one-degree-problem-types.yml
  - type: Lifecycle
    url: lifecycle/one-degree-lifecycle.yml
  - type: Conformance
    url: conformance/one-degree-conformance.yml
  - type: DataModel
    url: data-model/one-degree-data-model.yml
- aid: one-degree:one-degree-reference-api
  name: One Degree Reference API
  description: Property types, rating types, and guides.
  humanURL: https://github.com/1deg/resource-server-api-docs
  baseURL: https://data.1degree.org/v1
  tags:
  - Reference
  properties:
  - type: OpenAPI
    url: openapi/one-degree-reference-api-openapi.yml
  - type: Documentation
    url: https://github.com/1deg/resource-server-api-docs
  - type: Postman
    url: postman/one-degree.postman_collection.json
  - type: Authentication
    url: authentication/one-degree-authentication.yml
  - type: Conventions
    url: conventions/one-degree-conventions.yml
  - type: ErrorCatalog
    url: errors/one-degree-problem-types.yml
  - type: Lifecycle
    url: lifecycle/one-degree-lifecycle.yml
  - type: Conformance
    url: conformance/one-degree-conformance.yml
  - type: DataModel
    url: data-model/one-degree-data-model.yml
- aid: one-degree:one-degree-submissions-api
  name: One Degree Submissions API
  description: Community submissions.
  humanURL: https://github.com/1deg/resource-server-api-docs
  baseURL: https://data.1degree.org/v1
  tags:
  - Submissions
  properties:
  - type: OpenAPI
    url: openapi/one-degree-submissions-api-openapi.yml
  - type: Documentation
    url: https://github.com/1deg/resource-server-api-docs
  - type: Postman
    url: postman/one-degree.postman_collection.json
  - type: Authentication
    url: authentication/one-degree-authentication.yml
  - type: Conventions
    url: conventions/one-degree-conventions.yml
  - type: ErrorCatalog
    url: errors/one-degree-problem-types.yml
  - type: Lifecycle
    url: lifecycle/one-degree-lifecycle.yml
  - type: Conformance
    url: conformance/one-degree-conformance.yml
  - type: DataModel
    url: data-model/one-degree-data-model.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- url: https://about.1degree.org/feed/
  type: BlogRSS
- type: Overlay
  url: overlays/one-degree-openapi-overlay.yaml
- type: DeveloperPortal
  url: https://about.1degree.org/
- type: Documentation
  url: https://github.com/1deg/resource-server-api-docs
- type: APIReference
  url: https://github.com/1deg/resource-server-api-docs/blob/main/README.md
- type: Website
  url: https://www.1degree.org/
- type: Blog
  url: https://about.1degree.org/latest-news/
- type: TermsOfService
  url: https://about.1degree.org/terms-of-use
- type: PrivacyPolicy
  url: https://about.1degree.org/privacy-policy
- type: GitHubOrganization
  url: https://github.com/1deg
- type: Support
  url: https://about.1degree.org/contact-us/
- type: SignUp
  url: http://socialservicedata.org/api/get-key/
- type: Postman
  url: postman/one-degree.postman_collection.json
- type: Authentication
  url: authentication/one-degree-authentication.yml
- type: Conventions
  url: conventions/one-degree-conventions.yml
- type: ErrorCatalog
  url: errors/one-degree-problem-types.yml
- type: Lifecycle
  url: lifecycle/one-degree-lifecycle.yml
- type: Conformance
  url: conformance/one-degree-conformance.yml
- type: DomainSecurity
  url: security/one-degree-domain-security.yml
- type: DataModel
  url: data-model/one-degree-data-model.yml
- type: X-MCPServerCandidate
  url: mcp/one-degree-mcp.yml
  note: 'Renamed from MCPServer 2026-09-03 (roadmap#247): the manifest self-describes as status: candidate — a tool list derived
    from the published API contracts, not an existing server. The scorer already read the manifest and reported mcp_server
    correctly; the MCPServer type was crediting the artifact-type surfaces with a server that does not exist.'
- type: LLMsTxt
  url: llms/one-degree-llms.txt
- type: AgentSkill
  url: skills/_index.yml
- type: Arazzo
  name: One Degree — find and detail a nearby service
  url: arazzo/one-degree-find-services.yml
x-enrichment:
  date: '2026-07-20'
  status: enriched
  artifacts_added: 15
  pass: local-v1

One Degree API — frequently asked questions

Does One Degree have an API?

Yes. APIs.io lists 6 APIs from One Degree, including One Degree Housing API, One Degree Locations API and One Degree Opportunities API, and 3 more.

Is there an OpenAPI specification for the One Degree API?

Yes. APIs.io indexes 6 OpenAPI specifications for One Degree, each linked for download from this page.

How do I authenticate with the One Degree API?

One Degree uses bearer-token authentication (apiKey/custom-signature · 2 schemes). The details are profiled on APIs.io as One Degree Authentication.

Is the One Degree API ready for AI agents?

One Degree has a Kin Score of 38.1 out of 100 (thin) and an Agent Readiness score of 27.0 (agent-aware), scored by API Evangelist on 2026-11-06.

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